Be ye kind to one another (ginesthe eis allēlous chrēstoi). Present middle imperative of ginomai, “keep on becoming kind (chrēstos, used of God in Rom 2:4) toward one another.” See notes on Col 3:12.
Tenderhearted (eusplagchnoi). Late word (eu, splagchna) once in Hippocrates, in lxx, here and 1Pe 3:8 in N.T.